Stem and Leaf, Line Plot, and Box and Whisker

Front

What is the median in a data set?

Back

The median is the middle value when all numbers are arranged in order from least to greatest.

Front

What is a line plot?

Back

A line plot is a graph that shows the frequency of data along a number line, using Xs or other marks to represent the number of occurrences.

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers together and divide by the total number of values.

Front

What is the interquartile range (IQR)?

Back

The interquartile range is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the range of the middle 50% of the data.

Front

What does a box and whisker plot represent?

Back

A box and whisker plot visually displays the distribution of a data set, showing the median, quartiles, and potential outliers.

Front

What is the purpose of ordering data from least to greatest?

Back

Ordering data from least to greatest helps in identifying the median, quartiles, and understanding the overall distribution of the data.

Front

What is a key feature of a box plot?

Back

A key feature of a box plot is the box that represents the interquartile range, with lines (whiskers) extending to the minimum and maximum values.

Front

How do you identify outliers in a data set?

Back

Outliers can be identified using the IQR method: any value that is more than 1.5 times the IQR above Q3 or below Q1 is considered an outlier.

Front

What is the significance of the median in data analysis?

Back

The median provides a measure of central tendency that is less affected by outliers than the mean.

Front

What is a line plot used for?

Back

A line plot is used to display the frequency of data points in a simple and visual manner, making it easy to see trends and patterns.